Alloy ring for concrete pumping

Abstract

The utility model relates to the technical field of concrete pumping machinery, in particular to an alloy ring for concrete pumping, which is arranged on a cutting ring or a wear plate, the cutting ring can be alternately communicated with two through holes on the wear plate, and a concave part is formed on one side of the alloy ring for concrete pumping; the cutting ring and the glasses plate are each provided with a welding part matched with the concave part, and one or more evenly-distributed welding fluid retention grooves are formed in each welding part. According to the utility model, the concave part is arranged on the alloy ring, so that the wear resistance of the alloy ring can be ensured, the risk caused by integrally thinning the alloy ring is avoided, the consumption of precious metals consumed by the alloy ring is effectively reduced, and the welding fluid retention groove is arranged on the welding part, so that the leakage of the welding fluid can be effectively avoided, and the welding effect is ensured; and the welding strength between the alloy ring and the cutting ring or the wear plate can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of concrete pumping machinery technology, and in particular to an alloy ring for concrete pumping. Background Technology

[0002] The spectacle plate and its matching cutting ring form a wear-resistant pair, a key wear-resistant component of concrete conveying equipment. The spectacle plate is installed on the hopper wall plate, with two holes that connect to two equal-diameter holes on the hopper, and directly to the two pressure cylinders for concrete. The matching cutting ring is also placed in the hopper, mounted on an 'S' tube and tightly attached to the spectacle plate. During concrete pumping, the 'S' tube swings left and right, causing the cutting ring to alternately connect with the holes at both ends of the spectacle plate, thus achieving uninterrupted output of pressurized concrete. The cutting ring swings rapidly left and right under the drive of the 'S' tube. Since concrete is mainly composed of sand and gravel, strong impact and friction forces are generated between the cutting ring and the spectacle plate, causing impact, wear, and failure of both. Therefore, manufacturing a spectacle plate with stable and reliable quality has always been a key technological challenge.

[0003] With technological advancements, the current market primarily uses high-chromium cast iron surfacing and cemented carbide brazing as the wear-resistant medium in spectacle plates. Since cemented carbide accounts for the majority of the cost of spectacle plates, and alloy rings account for 85% of the alloy cost, the extensive use of cemented carbide, while increasing the lifespan of spectacle plates, primarily results in failures occurring in two small, impact-resistant areas, while the majority of the plate remains largely intact. This leads to significant waste of precious and rare metals and high manufacturing costs, becoming an obstacle to further increasing market share and entering the international market.

[0004] The spectacle plate and cutting ring are key wear-resistant components for continuous concrete conveying. Both are embedded in the concrete material. Within seconds, the cutting ring must switch from hole A to hole B on the spectacle plate, instantly cutting the concrete column at hole A and pushing aside the surrounding concrete to achieve a sealed connection with hole B. Subjected to tens of thousands of impacts and frictions with concrete daily, the cutting ring and spectacle plate require highly wear-resistant alloys. Currently, only tungsten alloys can meet this requirement. Tungsten is a precious and rare metal with a hardness second only to diamond, making it a valuable resource. The spectacle plate and cutting ring, key components of concrete conveying equipment, cannot function without tungsten alloys; therefore, reducing the amount of tungsten alloy used has been a relentless pursuit in the industry. However, for many years, due to various reasons, this has been achieved by thinning the tungsten alloy ring, resulting in a significant decrease in product lifespan.

[0005] Therefore, it is necessary to provide a new alloy ring for concrete pumping to solve the above-mentioned technical problems. Utility Model Content

[0006] The main purpose of this invention is to provide an alloy ring for concrete pumping, which aims to solve the problem of the large amount of precious and rare metals used in existing alloy rings for concrete pumping.

[0007] To achieve the above objectives, the present invention proposes an alloy ring for concrete pumping, which is disposed on a cutting ring or a spectacle plate. The cutting ring can alternately communicate with two through holes on the spectacle plate, and a recess is formed on one side of the alloy ring for concrete pumping. Both the cutting ring and the spectacle plate are provided with welding portions that match the recess, and one or more uniformly distributed welding liquid retention grooves are opened on the welding portions.

[0008] Optionally, the alloy ring for concrete pumping is a flat ring, and the welding part has a welding groove that matches the shape of the alloy ring for concrete pumping, and the alloy ring for concrete pumping is welded to the welding groove.

[0009] Optionally, the bottom wall of the welding groove is formed with a protrusion that matches the recess.

[0010] Optionally, the recess is a hollow groove, and the inner wall of the welding groove is an arc surface; and / or, the number of welding grooves is two or more, and each groove is distributed radially at intervals along the alloy ring.

[0011] Optionally, the sidewalls on both sides of the welding groove are inclined surfaces that gradually taper towards the bottom wall of the welding groove; and / or, the bottom wall of the welding groove is a plane or an arc surface.

[0012] Optionally, the inner wall of the recess includes a bottom surface and a side surface connected together, wherein the bottom surface is an arc-shaped surface or a plane;

[0013] The side surface is perpendicular to the bottom surface; or the side surface is inclined towards the welded part along the extension direction of the bottom surface.

[0014] Optionally, the alloy ring for concrete pumping is a groove-shaped ring body, and the recessed portion is a hollow groove; the welded portion forms a protrusion that matches the hollow groove, and the protrusion is welded into the hollow groove.

[0015] Optionally, the alloy ring for concrete pumping includes multiple arc-shaped blocks connected end to end, with a first mating surface and a second mating surface formed at both ends of the arc-shaped blocks, the first mating surface being an arc-shaped surface or an S-shaped surface, and the shape of the second mating surface matching the shape of the first mating surface; the first mating surface of the preceding arc-shaped block is welded to the second mating surface of the following arc-shaped block.

[0016] Optionally, the alloy ring for concrete pumping further includes a insert ring body, the insert ring body comprising multiple insert structures connected end to end;

[0017] A slot matching the insert ring is formed on the welded portion of the spectacle plate, the insert structure is close to the inner side of the arc-shaped block, and the insert structure is welded into the slot; or a slot matching the insert ring is formed on the welded portion of the cutting ring, the insert structure is close to the outer side of the arc-shaped block, and the insert structure is welded into the slot.

[0018] Optionally, the alloy ring for concrete pumping includes an inner ring body and an outer ring body that are interlocked with each other. The inner ring body includes a plurality of first interlocking blocks that are connected end to end, and the outer ring body includes a plurality of second interlocking blocks that are connected end to end.

[0019] A first tenon is formed in the middle of the first fastening block, and notches are formed at both ends of the second fastening block. The notches of two adjacent second fastening blocks are spliced ​​together to form a second fastening groove that matches the first tenon. The first tenon of each first fastening block is welded into each of the second fastening grooves to connect the inner ring body and the outer ring body.

[0020] Alternatively, the first fastening block may have a first fastening groove in the middle, and the two ends of the second fastening block may form fastening joints. The fastening joints of two adjacent second fastening blocks may be spliced ​​together to form a second tenon that matches the first fastening groove. Each of the second tenons on the inner ring body may be welded to each of the first fastening grooves to connect the inner ring body and the outer ring body.

[0021] In this utility model, by setting a recess on the alloy ring, the wear resistance of the alloy ring can be guaranteed, the risks of overall thinning of the alloy ring can be avoided, and the amount of precious metal consumed by the alloy ring can be effectively reduced. In addition, the welding liquid retention groove on the welding part can effectively prevent welding liquid leakage, thereby ensuring the welding effect and helping to ensure the welding strength between the alloy ring and the cutting ring or spectacle plate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the concrete pumping alloy ring welded onto the cutting ring in Embodiment 1 of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the cutting ring during wear in the prior art;

[0025] Figure 3 In Example 1, 'a' is a schematic diagram of the installation of the alloy ring used for concrete pumping.

[0026] Figure 3 In Example 2, b is a schematic diagram of the installation of the alloy ring used for concrete pumping;

[0027] Figure 4 This is a schematic diagram of the structure of the alloy ring used for concrete pumping in Example 1 of Embodiment 1;

[0028] Figure 5 'a' in the context is Figure 4 Section II in the middle;

[0029] Figure 5 b in Figure 4 Sectional view II-II in the middle;

[0030] Figure 6 In Example 1, 'a' is a schematic cross-sectional view of the alloy ring used for concrete pumping.

[0031] Figure 6 In the diagram, b is a cross-sectional schematic diagram of the alloy ring used for concrete pumping in Example 2 of Example 1;

[0032] Figure 6 In Example 3 of Embodiment 1, 'c' is a cross-sectional schematic diagram of the inner wall of the recessed portion when the side surface is perpendicular to the bottom surface.

[0033] Figure 6 In the figure, d is a cross-sectional schematic diagram of the inner wall of the recessed part in Example 3 of Embodiment 1 when the side is inclined.

[0034] Figure 7 This is a schematic diagram of the installation of the arc-shaped block in Example 1;

[0035] Figure 8 This is a schematic diagram of the structure of the alloy ring for concrete pumping in Example 1 when applied to the spectacle plate;

[0036] Figure 9 for Figure 7 A schematic diagram of the cross-section of an alloy ring used in concrete pumping.

[0037] Figure 10 This is a schematic diagram of the structure of the alloy ring for concrete pumping in Example 1 when it is applied to the cutting ring;

[0038] Figure 11 for Figure 10 A schematic diagram of the cross-section of an alloy ring used in concrete pumping.

[0039] Figure 12 This is a schematic diagram of the structure of the alloy ring used for concrete pumping in Embodiment 3 of this utility model;

[0040] Figure 13 'a' in the context is Figure 12 Section III-III;

[0041] Figure 13 b in Figure 12 Section IV-IV;

[0042] Figure 14 This is a schematic diagram of the structure of the alloy ring used for concrete pumping in Embodiment 4 of this utility model.

[0043] Explanation of icon numbers:

[0044] 1. Cutting ring; 2. Welding part; 2.1. Welding liquid retention tank; 2.2. Welding groove; 2.3. Protrusion; 3. Alloy ring for concrete pumping; 3.1. Recess; 3.1.1. Bottom surface; 3.1.2. Side surface; 3.2. Arc-shaped block; 3.2.1. Arc-shaped curved surface; 3.2.2. S-shaped curved surface; 3.3. Insert ring body; 3.3.1. Insert structure; 3.4. Inner ring body; 3.4.1. First fastening block; A1. First fastening groove; 3.4.2. First tenon; 3.5. Outer ring body; 3.5.1. Second fastening block; B1. Fastening joint; 3.5.2. Second fastening groove; D. Redundant alloy.

[0045] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0047] This invention proposes an alloy ring for concrete pumping, aiming to solve the problem of the large amount of precious and rare metals used in existing alloy rings for concrete pumping. Example 1

[0048] like Figures 1 to 6As shown, this embodiment provides an alloy ring 3 for concrete pumping, referred to as the alloy ring, which is disposed on a cutting ring 1 or a spectacle plate. The cutting ring 1 can alternately communicate with two through holes on the spectacle plate. A recessed portion 3.1 is formed on one side of the alloy ring 3 for concrete pumping. Both the cutting ring 1 and the spectacle plate are provided with welding portions 2 that match the recessed portion 3.1, and one or more uniformly distributed welding slurry retention grooves 2.1 are opened on the welding portions 2. By providing a recessed portion 3.1 on the alloy ring, this embodiment can not only ensure the wear resistance of the alloy ring and avoid the risks brought about by overall thinning of the alloy ring, but also effectively reduce the amount of precious metals consumed by the alloy ring. In addition, the welding slurry retention grooves 2.1 on the welding portions 2 can effectively prevent welding slurry leakage, thereby ensuring the welding effect and helping to ensure the welding strength between the alloy ring and the cutting ring 1 or the spectacle plate.

[0049] The wear of the tungsten alloy rings in the spectacle plate and cutting ring 1 is a gradual process, and the wear eventually manifests as severe wear on the top sealing surface of the ring and its inner and outer ring edges, while the bottom of the ring shows no wear and can be considered as redundant alloy D. However, the ring's impact resistance requires a certain height and rigidity. Based on this, a structure with unchanged or slightly increased inner and outer diameter thickness, but a hollowed-out bottom (recessed part 3.1) is designed. This avoids the problem of significantly reduced lifespan caused by the commonly used thinning of the alloy. While ensuring that the alloy ring thickness fully utilizes the impact resistance and wear resistance of the tungsten alloy, the amount of tungsten alloy used is significantly reduced, achieving equal lifespan and low consumption.

[0050] Specifically, see Figure 3 In section a, the recessed portion 3.1 is a hollow groove; the welding portion 2 has a welding groove 2.2 that matches the shape of the alloy ring 3 for concrete pumping, and the bottom wall of the welding groove 2.2 forms a protrusion 2.3 that matches the recessed portion 3.1; or the bottom wall of the welding groove 2.2 is flat. The alloy ring 3 for concrete pumping is welded into the welding groove 2.2, and the edge of the hollow groove is welded to the bottom wall of the welding groove 2.2. The hollow groove can also be filled with steel rings, steel sheets, or metal powder, or directly filled by pouring molten metal. Preferably, the bottom wall of the welding groove 2.2 forms a protrusion 2.3 that matches the recessed portion 3.1, and when the bottom wall of the welding groove 2.2 forms a protrusion 2.3, the protrusion 2.3 of the welding groove 2.2 is welded into the hollow groove. In this embodiment, the alloy ring is welded into the welding groove 2.2 to ensure the welding strength between the alloy ring and the spectacle plate or cutting ring 1. The side of the alloy ring facing the welding groove 2.2 forms a hollow groove, which not only ensures wear resistance but also reduces the consumption of precious and rare metals by the alloy ring. Welding is convenient and production costs are reduced.

[0051] In Example 1 of this embodiment, the inner wall of the hollowed-out groove is an arc surface; preferably, see... Figure 3 The number of hollowed-out grooves is two or more, and each groove is distributed at a distance along the radial direction of the alloy ring.

[0052] In Example 2 of this embodiment, the sidewalls on both sides of the hollowed-out groove are inclined surfaces that gradually narrow along the direction close to the bottom wall of the hollowed-out groove; preferably, the bottom wall of the hollowed-out groove is a plane or an arc surface.

[0053] In Example 3 of this embodiment, the inner wall of the recessed portion 3.1 includes a bottom surface 3.1.1 and a side surface 3.1.2 connected to each other. The bottom surface 3.1.1 is an arc-shaped surface or a plane; the side surface 3.1.2 is arranged perpendicular to the bottom surface 3.1.1; or the side surface 3.1.2 is arranged inclined towards the welded portion 2 along the extending direction of the bottom surface 3.1.1.

[0054] In all the above examples, the welded part 2 can reduce the consumption of precious and rare metals in the alloy ring while ensuring the wear resistance of the alloy ring.

[0055] Further, see Figure 7 The alloy ring 3 for concrete pumping includes multiple arc-shaped blocks 3.2 connected end-to-end. The two ends of each arc-shaped block 3.2 form a first mating surface and a second mating surface, respectively. The first mating surface is an arc-shaped curved surface 3.2.1 or an S-shaped curved surface 3.2.2. The shape of the second mating surface matches the shape of the first mating surface. The first mating surface of the preceding arc-shaped block 3.2 is welded to the second mating surface of the following arc-shaped block 3.2. In this embodiment, the alloy ring is assembled in a segmented splicing manner to facilitate mass production. Furthermore, the fit between the first and second mating surfaces facilitates docking and prevents leakage of weld slurry during welding, ensuring a good welding effect.

[0056] Furthermore, the alloy ring 3 for concrete pumping also includes a insert ring body 3.3, which comprises multiple insert structures 3.3.1 connected end-to-end; see also Figure 8 and Figure 9 When the alloy ring is applied to the spectacle plate, a slot matching the insert ring body 3.3 is formed on the welded part 2 of the spectacle plate. The insert structure 3.3.1 is close to the inner side of the arc block 3.2 and the insert structure 3.3.1 is welded into the slot.

[0057] See Figure 10 and Figure 11 When the alloy ring is applied to the cutting ring 1, a slot matching the insert ring body 3.3 is formed on the welded part 2 of the cutting ring 1. The insert structure 3.3.1 is tightly attached to the outer side of the arc-shaped block 3.2 and welded into the slot. The insert ring body 3.3 further improves the wear resistance of the alloy ring body and enhances the wear resistance of the edges of the cutting ring 1 during movement. Example 2

[0058] The difference from Example 1 is as follows: See Figure 3In section b, the recessed part 3.1 is a hollow groove; the welding part 2 forms a protrusion 2.3 that matches the hollow groove, and the protrusion 2.3 is welded into the hollow groove. Example 3

[0059] The difference from Example 1 or Example 2 is as follows: See Figure 12 and Figure 13 The alloy ring 3 for concrete pumping includes an inner ring body 3.4 and an outer ring body 3.5 that are interlocked. The inner ring body 3.4 includes a plurality of first interlocking blocks 3.4.1 connected end to end, and the outer ring body 3.5 includes a plurality of second interlocking blocks 3.5.1 connected end to end. A first tenon 3.4.2 is formed in the middle of the first interlocking block 3.4.1, and notches are formed at both ends of the second interlocking blocks 3.5.1. The notches of two adjacent second interlocking blocks 3.5.1 are spliced ​​to form a second interlocking groove 3.5.2 that matches the first tenon 3.4.2. The first tenon 3.4.2 of each first interlocking block 3.4.1 is welded into each second interlocking groove 3.5.2 to connect the inner ring body 3.4 and the outer ring body 3.5.

[0060] In this embodiment, the first tenon 3.4.2 is an isosceles trapezoidal structure, and the second tenon is a right-angled trapezoidal structure; both the first interlocking groove A1 and the second interlocking groove 3.5.2 are dovetail grooves. The inner ring body 3.4 and the outer ring body 3.5 are spliced ​​together by a dovetail joint structure, which effectively ensures the connection strength between the inner ring body 3.4 and the outer ring body 3.5. Example 4

[0061] The difference from Example 3 is as follows: See Figure 14 In this embodiment, the first fastening block 3.4.1 has a first fastening groove A1 in its middle, and the two ends of the second fastening block 3.5.1 respectively form fastening joints B1. The fastening splicing of two adjacent second fastening blocks 3.5.1 forms a second tenon that matches the first fastening groove A1. Each second tenon on the inner ring body 3.4 is welded into each of the first fastening grooves A1 to connect the inner ring body 3.4 and the outer ring body 3.5. The splicing and fastening between the first fastening block 3.4.1 and the second fastening block 3.5.1 ensures the connection strength between the inner ring body 3.4 and the outer ring body 3.5 under impact and wear, and prevents the inner ring body 3.4 and the outer ring body 3.5 from separating due to impact.

[0062] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An alloy ring for concrete pumping, disposed on a cutting ring (1) or a spectacle plate, wherein the cutting ring (1) is alternately connected to two through holes on the spectacle plate, characterized in that, A recess (3.1) is formed on one side of the alloy ring (3) for concrete pumping; both the cutting ring (1) and the spectacle plate are provided with welding parts (2) that match the recess (3.1), and one or more uniformly distributed welding liquid retention grooves (2.1) are opened on the welding parts (2).

2. The alloy ring for concrete pumping as described in claim 1, characterized in that, The alloy ring for concrete pumping is a flat ring body. The welding part (2) has a welding groove (2.2) that matches the shape of the alloy ring for concrete pumping (3). The alloy ring for concrete pumping (3) is welded to the welding groove.

3. The alloy ring for concrete pumping as described in claim 2, characterized in that, The bottom wall of the welding groove (2.2) forms a protrusion (2.3) that matches the recess (3.1).

4. The alloy ring for concrete pumping as described in claim 2, characterized in that, The recessed portion is a hollow groove, and the inner wall of the welding groove (2.2) is an arc surface; and / or, the number of welding grooves (2.2) is two or more, and each welding groove (2.2) is distributed at a radial interval along the alloy ring.

5. The alloy ring for concrete pumping as described in claim 3, characterized in that, The sidewalls on both sides of the welding groove (2.2) are inclined surfaces that gradually narrow along the direction close to the bottom wall of the welding groove (2.2); and / or, the bottom wall of the welding groove (2.2) is a plane or an arc surface.

6. The alloy ring for concrete pumping as described in claim 3, characterized in that, The inner wall of the recess (3.1) includes a bottom surface (3.1.1) and a side surface (3.1.2) connected to each other, wherein the bottom surface (3.1.1) is an arc-shaped surface or a plane; The side surface (3.1.2) is perpendicular to the bottom surface (3.1.1); or the side surface (3.1.2) is inclined towards the welded part (2) along the extension direction of the bottom surface (3.1.1).

7. The alloy ring for concrete pumping as described in claim 1, characterized in that, The alloy ring for concrete pumping is a groove-shaped ring body, and the recessed part (3.1) is a hollow groove; the welding part (2) forms a protrusion (2.3) that matches the hollow groove, and the protrusion (2.3) is welded into the hollow groove.

8. The alloy ring for concrete pumping as described in any one of claims 1 to 7, characterized in that, The concrete pumping alloy ring (3) includes multiple arc-shaped blocks (3.2) connected end to end. The two ends of the arc-shaped block (3.2) form a first mating surface and a second mating surface, respectively. The first mating surface is an arc-shaped curved surface (3.2.1) or an S-shaped curved surface (3.2.2). The shape of the second mating surface matches the shape of the first mating surface. The first mating surface of the previous arc-shaped block (3.2) is welded to the second mating surface of the next arc-shaped block (3.2).

9. The alloy ring for concrete pumping as described in claim 8, characterized in that, The alloy ring (3) for concrete pumping also includes a insert ring body (3.3), which includes multiple insert structures (3.3.1) connected end to end. A slot matching the insert ring (3.3) is formed on the welded part (2) of the spectacle plate, the insert structure (3.3.1) is close to the inner side of the arc block (3.2), and the insert structure (3.3.1) is welded into the slot; or a slot matching the insert ring (3.3) is formed on the welded part (2) of the cutting ring (1), the insert structure (3.3.1) is close to the outer side of the arc block (3.2), and the insert structure (3.3.1) is welded into the slot.

10. The alloy ring for concrete pumping as described in any one of claims 1 to 8, characterized in that, The concrete pumping alloy ring (3) includes an inner ring body (3.4) and an outer ring body (3.5) that are interlocked with each other. The inner ring body (3.4) includes a plurality of first interlocking blocks (3.4.1) connected end to end, and the outer ring body (3.5) includes a plurality of second interlocking blocks (3.5.1) connected end to end. A first tenon (3.4.2) is formed in the middle of the first interlocking block (3.4.1), and notches are formed at both ends of the second interlocking block (3.5.1). The notches of two adjacent second interlocking blocks (3.5.1) are spliced ​​to form a second interlocking groove (3.5.2) that matches the first tenon (3.4.2). The first tenon (3.4.2) of each first interlocking block (3.4.1) is welded into each of the second interlocking grooves (3.5.2) to connect the inner ring body (3.4) and the outer ring body (3.5). Alternatively, the first snap-fit ​​block (3.4.1) may have a first snap-fit ​​groove (A1) in the middle, and the two ends of the second snap-fit ​​block (3.5.1) may form snap-fit ​​joints (B1) respectively. The snap-fit ​​joints (B1) of two adjacent second snap-fit ​​blocks (3.5.1) may be spliced ​​to form a second tenon that matches the first snap-fit ​​groove (A1). Each second tenon on the inner ring body (3.4) may be welded to each of the first snap-fit ​​grooves (A1) to connect the inner ring body (3.4) and the outer ring body (3.5).

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